Determination of Hydrogen in Alkali Metals by Isotope Dilution Method

Autor:	B. D. Holt
Rok vydání:	1959
Předmět:	chemistry Hydrogen Trace Amounts Isotope dilution method Deuterium Borosilicate glass Sodium Analytical chemistry chemistry.chemical_element Isotope dilution Alkali metal Analytical Chemistry
Zdroj:	Analytical Chemistry. 31:51-54
ISSN:	1520-6882 0003-2700
DOI:	10.1021/ac60145a011
Popis:	The rapid exchange of hydrogen and deuterium in sodium or NaK affords a convenient method for hydrogen determination in these metals. Spikes equivalent to 5 to 250 ppm of hydrogen were recovered on 2-gram samples with a standard deviation, from the quantity added, equivalent to plus or minus 2 ppm. An 8-in. borosilicate sampling tube serves as the reaction vessel and as the gas bulb for mass spectrometric analysis. With many such tubes on hand, samples can be taken at sites of industrial operations and transported to the laboratory for analysis. In the analysis of NaK it is necessary to apply a correction factor to compensate for the effect of different rates of formation of the hydrides and deuterides in the cooler zones of the tube during equilibration. For sodium this effect is negligible and no correction is necessary. The time required for analysis after the sample is taken is about 3/4 hour. (auth)
Databáze:	OpenAIRE
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